Which set of causes and symptoms correctly describes hypokalemia?

• A. Causes: excessive potassium supplements or salt substitutes; Symptoms: increased muscle strength and hyperactive reflexes with no cardiac effects.
• B. Causes: vomiting, diarrhea, diuretics; Symptoms: muscle weakness, fatigue, possibly arrhythmias.
• C. Causes: high dietary potassium from fruits and vegetables only; Symptoms: profuse sweating and high blood pressure with persistent headaches.
• D. Causes: dehydration exclusively from lack of water intake; Symptoms: neurological hyperactivity and severe agitation in all cases.

Answer: (B)